Die for drill-making machines.



I "J'. G. LBYNERH' ma PPR DRILL MAKING MACHINES.

APPLICATION FILED APB. 13, 1912.

Patented Nov. 11, 1913.

2 sums-SHEET 1.

J. G. LEYNER. DIE FOR DRILL MAKING MAGHINES.

APPLICATION FILED APB..13, 1912. X v

Patented Nov. 11, 1913.

2 SHIEETSJSHEET 2.

Original application filed March 25, 191

Joan GEORGE LEYNER, or DENVER, COLORADO.

DIE FOR DRILL-MAKING MACHINES.

objects of my invention are: First, to pro-" vide multiple and interchangeable .partg sets of die aws for making die formed forgings of any and every kind and character that require one or more successive forging step treatments to completethem. Second,to provide a set of multiple part intermeshing and interchangeable die jaws and formers and dollies that are especially adapted to form either locking lugs or collar portions on the shank ends of and to size and otherwise form the shank end of rock cutting drill bits so that they will fit into the chucks of the. rock drilling engines they are to be used in. And

third, to provide operative sets of multiple part interchangeable die formed forgings making half die jaws .for use in die formed ,forgings making machines that are adapted to make forgin g's ofany forglug metal of any and all kinds and charactors of articles that it is practical to make in ,the form of a forcing. I attain these objyrts by the mechanism illustrated in the accom ninving drawings, in which:

Figure l, is a side elevation partly in section. of a drill formingand sharpening machine equipped with the multiple part die jaws embodying my invention. Fig. 2, is a plan view of the anvil portion of themachine, showing one of the multiple part die jaws. the dolly driving engine being omitted. Fig. 3. is a perspective view. of a one hal't' part of a multiple the carrier in which is scoured one of the roughing and finishing dirs. a pair of each being employed. Fig. r. is a transverse sectional view of Fig. 3, on the ine 4--'l. Fig.v 5, is a perspective view of the shank end former. Fig." 6., is a side view of the upsetting (lolly. vFig. 7, is a side view of a drill bit, illustrating the first step in forming the locking lugs there-' on. -\n(l Fig. 8, is a side view of a completed drill bit;

Similar letters of reference refer to similar parts tln'ougln-iut the several views.

Referring to the drawings: The numeral 2, Serial No.

1912. Serial No. 690,585.

LEYNER,-

Specification of Letters Patent. Patented Nov, 11 1913.

Divided andjhis application filed April 13,

l designates a column that forms the foundat1on basc of an operative drill sharpener hereinafter termed the base. This column form of base is provided with a floor flange 2 and with a cylinder bore 3, and at its top end a cylinder 3* is secured to it in any suitable manner. The top of this cylinder 3 is providedwith ananvil portion 4, and above the anvil a hammer block 5 mounted on belts or rods 6 that are connected at one of their ends to the hammer block and that extend slidably down through the anvil and are secured attheir opposite ends to the upperend of a piston head 7 that is reciprocally mounted in a cylindrical bore 3 formed in the cylinder 3 The bolts or rods 6 preferably extend down it by nuts 9.

The piston head is preferably a differential ended piston, the upper end 7 being of disk form, and from this disk-shaped end a stem portion 8 depends into the cylinder 3, of the base. The disk portion and also the stem portion are provided. with packing rings 8. A throttle valve 10, which may be of any suitable multiple port type, and which is provided with a handle 10 ,,is secured to the side of the machine and is arranged to admit compressed air by a pipe 11, to the lower end-of the piston head to raise it in its cylinder and to its upper end, through l suitable ports, to move it down in its cylinder alternately, which reciprocal movement of the piston imparts reciprocal movements to the hammer block, which is so relatively connected to the stroke of the piston head in its cylinder and to the top forging surface of the anvil that it reciprocates vertically above it in hammer blowstriking relation to it, and the opposing faces of both the anvil and the hammer block are'arranged to receive either interchangeable drill bit t'orniing. sharpening and shanking die jaws, or sharikingdie-carriers 11 and 11, as illus-- trated'in Figs. 1 and 2, and also die carriers I for making other kinds of die formed forging work. 4 recesses formed in the anvil and han'nner block by bolts 11 and 11, which are arranged. in slots to clamp the jaws in their recesses. The upper bolt 11" is secured against'dropping'outof its recess when loose -ened by an expansive spring 11 which;

holds it by pressure in its slot.

These die carriers are held in reciprocally ,3 12 pro ects from one side of the v y lnder'fif far enough to 'form a support for am -ngmegclinden13, which is slidably Emil/l axis of the die jaws of the vise.

This hy l'inder isarra-nged on the su porting arm E to p be -,I 1ao.v ed' 'reciprocally to and from "3a anditisalso arranged to be 'pc rigidlyto the support when set in fiits'dollgt-opei atin position. There are sev- ,bei ztdg y -;Sec1tfed"-and reciprocally mov d on the supporting-arm. My resent 2O nvention'f ean be combined witlrany ind of cooperating cylinder and piston that is ar-' y ranged reciprocally drive and upset the ends of drill steel, with 'dollies and formers i, and other-character of dies that are adapted 2); to workfti gainst th'e ends-of steel or iron biirs or' pieces; of any forging metal. This dolly driving' izylinder 13 has a valve chest '14,

lwhich isj connected with. the throttle valve; a hose 15. In the engine 13, an olly 16 is mounted, in operative chest "10,

so p et ng-d relation tog-the die-carriers 11 and 11 of th aiivlilhhdhainmer block, as will be fully "shown hereinafter.

' he engine 13iis slidably mounted on a slideway'l'l, which is formed on the arm 12,; ,that projects from the cylinder 3*, and it is, provided with a feed screw 18, to which a andle 19 is secured, by which the cylinder may be moved 'back and forth on its slideway, far enou h from the vise jaws, to permit a dolly to e inserted in the guide flange -20, of the engine, or to be removed from it when desired.

' The engine is provided with clamping bolts 21,'by which it may be clamped in adjusted posltions rigidly to its slideway. The

dolly is driven on itsforward strokes by a hammer piston that is reciprocally mounted in. the cylinder of the engine, and that is actuated by the air fiowing'through the hose 15, from the throttlcwalvelll, as is well un,

derstood, and in a manner that is common-to several of the dolly driving en ines, of ma chines in common use. The dtfily is moved on the rearward strokes of its reciprocal movement by a sprin 22, as shown.

v As illustrated, the ie-carriers 11 and 11 are arranged andadapted for forming the.

' shank or drill chuck holding ends of rock so cutting drill bits 23 used in rock drilling engines for drilling holes in rock by'form'ing collars 24 or lugs 25 on them, .as shown in Figs. 7 and'i8, which operation is fully described herpinafter. I have, however, illus-' trated a set of multiple part die jaws for stem ii -"axial alinement with the hie the engine cylinder may former and upsetting dollics illustrated were especially designed for die forging the par-' ticular character of locking lugs and shank ends of drill. bits illustrated in Fig. 8.-

The term shanking a drill steel, means to so form, size, and shape one end of a. bar of drill steel that is to be made into a drill bit, that it fits into the kind of. chuckit is to be held by, of the rock drilling engine it is to be used in and driven by. t pi'cfcrably use a pair of oppositely arran' ed chuck locking lugs 25 on the shank end of the drillliihfand also sizethe terminal end portion of the shank end of all drill bits so that they will fit closely in and can be instai'itly inserted and withdrawn from the chuck of the rock drilling engine they are to be used in.

In order to properly form, shape, and size lugs as well as the whole length of the chuck" fitting shank end'of the drill bit, T employ"- a separate and \difi'crent set of half die-carriers 11 and 11?, from those used for form ing and'sharpening the rock cutting lips oh the oppositeends of the. drill stool from their shank ends. A perspective view of one of these carriers with its dics is shown in Fig; '3, These two hall shanking (U-(1111",

rier's 11 and 11 are formed with dove tailed shouldered portions 26, that arear-. ranged to fit into the dove-tailed locking recesses 27 ofthe anvil and haunner block, and they are also arranged and adapted to vvlMS-secured, in those recesses by the clampingibolts 11" and It respectively. They extend entirely across and beyond the top surfaces of the anvil over its shelf portion "28 and also beyond the die surface of the hammer block over its shell portion, and they rest and are supported on the blocks 29 which are clamped on the shelf portitms by plates 30 and bolts 3]. 'lhcsc carriers comprise semi-circular shaped half round members that are each provided with a semicircular or half round die groove or recess 32, that extendsthroughout its length, ex-. cept-at its rear cud, where a narrow ternnnal end portion 33 is formed, of onoiigh smaller dianicteuthau the recess 32in form' a shoulder 34. These carriers form sup ports for 'halfpart. dies, that make. up the rest of this shankin set of dies, and they'- are placed inside 0 them as follows: the ear end and central po1'tion :"bf the length of each of the carriers, I placcv'a'jntl secure a half round roughing and fini'sliing lfig forming bushing dic 34". These half round roughing and tinishingdies are s ccured in the rear cnd of the senii circular recess of the carriers against the shoulder '34, and they may be secured in any suitable manner. 1 preferably, however, secure them by pins 15; which I terfn lockingpins, land whichextend through the-bottom portion of finishing die'i n the carriers, and at the same time permits of their removal wherever desired by simply driving out the locking pins. The forward ends of these roughing and finishing half dies are preferably arranged to slide and. thusto lock under projecting ribs 36 which are formed along the opposite side edges of cachet the carriers, the under side edges of which are beveled,

' and the edges of the opposite sides of each halt of these roughing and finishing dies are likewise chamfer'ed or beveled ed and are arranged to register with and to fit. closely iuuler the ribs of the carriers. These i'-ou5 hing, sizing and finishingfdies are con scquently removably secured in a stationary position in the carriers, and each of them contains a roughing portioii S'twhich is a i flattened portioncontaining a slight central circular shaped recess 38 at its rear end, in which the round body of the drill steel tits, and a larger semi-circular portion 39 which is formed adjacent to this flattened roughing portion, receives and defines the, height or the length of the lugs above the body of the drill steel, and consequently dei fines the diameter of drill steel through the lugs, and on the opposite side of this circular lug defining part 39 a flattened finishing portion 40 is formed, adjacent to which aE circular recess portion 41 is formed, that ends in an outwardly flaring, tapering, upsetting terminal end portion -12 straighten and finish the terminal end cf the shank portion of drill bits. roughing finishing half dies occup the roan end and central portion of the shankiu jaws. leaving aspace in the front end of the I shanking jaws in which a-pair o-t semi-circular shaped upsetting plunger moving halt jaws 43 are titted. Each of these upsetting plunger moving jaws is provided with a stain-circular recess at that extends throughout its length from one end to near its oppo-- movement back and forth out of and back This at the opposits end of the bushing from its roughing portion and that'is. adapted to size and These two into the front end of the carriers, the lower upsetting plunger half jaw striking when pushed outof the frontend of the carrier, the front end of. the upsetting dolly 16, and the upper upsetting and plunger die jaw is pushed when the member 6 is raised against a stop arm 45,. that is secured to one end of a rod 46, the opposite end of which extends into an aperture formed in 'alug on the forward end of the hammer pistcacylinder, in which the rod is secured bya set screw, nctshown- This stop arm is set to stop the upper upsetting die when even with the face of the upsetting dolly, when it is shouldered back against its guide flange 20.

his upsetting dolly is provided with a, spring-receiving recess. 47 similar to that of the drill bit forming dolly, which is arranged to receive one end of the spring 2.,

which is arranged to assist the upsetting dolly on the backward return stroke of its reciprocal movement as it strikes against. the ends of these two'u'psetting plunger half die jaws, and drives them slidingly into the die-carrier s, as will be presently described. These upset/ting plunger diejaws are adapted to receive the heated end of the bars of. drill steel that. are to have shank ends formed on them, after these die aws are pushed out ofthe carriers, against the end of the upsetting dolly and of the stop arm 45, by the operator. The end is then upset to form a collar, its will be presently described. In-ease hollow drill steel is used, a shank end former .48 is employed, toupset-the end of the shank and to enter and keep open the end portion of the axial aperture through the drill steel. This shank end former comprises a head portion 419, provided with an axially positioned projecting round lug 50, that tapers smaller from its base to its end, and that is adapted to enter and slightly enlarge and outwardly flare the entrance endof the axial aperture of the drill steel. This projecting lugzpret worked, and confine'its extreme end. The head portlcn of thlslshank end former 15 provided with a shank end 52 that is made Y to fit. closely. but. loosely in'thedie recesses of the upsetting. plunger die jaws, and of a length to tit against their closed ends, a lid. allow the inside of thehead portion to test. against their ends and project beyond them, and to thus'lie in the semi-circular recess of the shanking die jaws, opposite to the adjacent end of the roughing jaws. This shank end former is adapted to be used solely in these upsetting plunger jaws, and is not'intended to be used inthe guide flange of the dolly driving engine. These shanking, roughing, finishing, upsetting, and

plunger and shank end dies, make a complete set of dies for forming logs on and for the shank ends of bars of drill steel, that have'to he provided with oppositely arranged chuck receiving locking lugs.

'lhepperation of die forging and formin the chuck locking, lugs, and of sizing and finishing them, as well as the terminal, shank ends of the drill steel, is as follows: The drill bits are cut from mcrchantable bars of either hollow or solid drill steel to the lengths .el the drill bits required, and the ends selected for the Sllttl'lklng ends are heated to a forging heat. Then, assuming that the shanking and roughing and finishing dies, and also the upsetting plunger Jaws, hare been properly positioned, and that the upsetting phmger jaws have been pushed .out against the stop arm, and the "end of the upsetting dolly, the end of a heated drill steel is placed in the die recess o't' thodower upseting plunger die jaw against its closed end, the throttle valve is then manipulated to close the 11 per die jaws down tight; on the drill steel, W l HCh also causes the upper roughing and finishing die to also grip the drill'steel, and these two sets of jaws are so relativelymrranged that the roughing'and finishing jawsdiold thedrill steel the tightest. The throttle valve' is then thrown wide open, which starts up the reciprocating hammer action of the upsetting dolly against the closed ends of the upsetting plunger dies, which drives them slidably into the carriers, and as there is a short. clear-space in the carriers between the inner end of the roughing and finishing dies, and these upsettin lunger dies, when they vare pushed out of the front end of the 40 shauking dies against the end of this upsetting dolly, and of the stop ,--.1ide arm, the heated drill steel along this clearance space between these two sets of dies is upset, as the upsetting plunger dies are driven into the ca riers by the reciprocating hammer blows of the upsetting dolly, which upsets a Eronnd collar 24 on the drill steel in the clearance space between these roughing and finishing dies and the upsetting plungers, so as shown in Fig. 7. The action of the dolly is then stopped, and-the jaws are opened" and the ,d-rill'steel is drawn back farenough to place this collar portion on the roughing portion 37 of the roughing and finishing dies, where it is subjected to a few hammer blows of the hammer block, and the up er halt roughing and finishing die, which attens the ollar portion into two rou h oppositely arranged lug portions. T1858, are then placed vertically in the lugs height defining circular space 3f) adjoining the roughing die surface. and they are shortened to their proper height above the S111.- face'of the bar of drill steel. The lugs-are then placed on the finishing surface {10 of the roughing and finishing die and a finishing pressure treatment is given to them. The upsetting and plunger dies are then again pushed outagainst the upsetting dolly and the stop arm, and the shank end former is then placed in them, and the drill steel is placed against the end of this former with its lugs inthe lug height defining space. The vise is then closed and the dolly started up and operated-*until the upsetting and p anger and shank end former have been driven as farasthey will go into the diecarriers, which action drives the tapered In 50 into the'axial aperture o'f-the drill steel and also upsets and slightly enlarges and compresses the metal and sizes it at the shank end of the drill steel. The drill steel I is then withdrawn and inserted in a drill holding chuck gage, that is ermctly like'the chuck the shanks fit in when inserted in a rock drilling engine, and if it enters freely and fits properly it is sticks or binds at any part of its end or at or around or on its lugs, the operation, or enough of it, is repeated until the shankend enters the drill holding chuck loosely and fits properly.-

' -The above description applies to the shanking of round hollow drill steel, but either hollow or solid, hexagon, cruciform or octagon steel can be; as easily treated by substitutin fshanki'ng-rou hing, and finishing, and "a so upsetting linger dies, especiallyfo d to'reoeivfqiti "e-sha s of steel. -My mventiomhowever,ontemplgies in this respect. any combination of- -diesgthat will form" either a collar ofarlug I form of shank .end on drill steel for use .as rgck cutting drill bit-s in rockdri'lling engines. 1

I have illustrated and described the preferred constructionof a multi le part die" 0 not wish', f

embodying. my invention; -I however, to be limited to the construction and arrangement shown, as; changes mightv be made in' design and arrangement, and even in the number of parts, without departing from the spirit of my invention.

Having described my. invention, what I claini as new anddesire to secure by Letters Patent, is: l

1. In a multiple part die, the combination of an anvil, a reciprocating hammer block, and a dolly engine, with'a pair ofshanking done. If, however, it

end forming die-carriers removably secured iii-said anvil and hammer block, a pair of bushing jaws removably fixed in said carriers, a pair of upsetting jaws reciprocally mounted against accidentaldia lacement in said carriers, and a shank end ormer and a dolly arranged to cooperate with said can riers to form a. shank end on a drill bit adapted to fit the chuck of the rock drilling engine in which it is used.

2. In a multiple part die for die-formed forgings making machines, a set of'shankiug rided with an axial aperture, a pair of shanking dies in said die-carriers, upsetting I plunger dies in said die-carriers, a dolly arranged to upset the shankend of adrill bit and form a collar thereon; means including a pair of finishing and sizing dies in said die-carriers for reducing this collar portion I to oppositely arranged, lug portions and then to size and finish said. lugs and shank. end portions, and a second dolly to maintain drill steel. a 3. Multiple part die-carriers' for drill sharpening and die-formed forgingsmakingv machines, adapted to Work drill steel and. forge various articles,"provided with an axial aperture, a set of shanking dies, a'pair of upsetting plunger reciprocating dies and an upsetting dolly arranged to upset the shank end of the hollow drill steel and form a collar portion thereon, rou hing, sizing and finishing die surfaces for-c anging said collar portion to a vpairof oppositely arranged lug portions, and a shank end former provided with an axially positioned projecting lugadapted to extend into and flaringly nlarge the axial aperture of said drill steel. v

4. In a multiple part die, a set of die-carriers comprising a pair of half part members provided with a bushing die having a roughing, finishing, and lug and shank and sizing (lies, a-pair of shank and upsetting and plunger-die jaws reciprocally mounted in said carriers, a shank end former dolly fitting in said upsetting-and plunger dies, a

dolly engine, an upsetting dolly recipr0 cated by said dolly driving engine for driving said upsetting and plunger dies and a stop arm arranged to gage the extent'oi movement of one of said and plunger die jaws. I

5. In a drillmaking maehine,-die-carricrs abutments at one end.

- cooperating pair of upsetting Wvardly projecting die-retaining ribs along their meeting edges.

7. In a dr1ll-mak ng comprising hollow-elongated members havp ing inwardly projecting die-retaining ribs the axial aperture at the shank end-of sald along the direction of their length, and die- .8. Ina drill-.makingma chine, a pair of (he arriers comprising-I hollow, elongated members having inwardly pro ectmg the retaining ribs along the direction of their length, and cooperating dies in said carriers having beveled portions along the meeting edges adapted to engage the retaining ribs of said carriers.

9. In a drill-making machine, a pair of die-carriers, comprising hollow, elongated members, having inwardly projecting ribs,

and a pair of cooperating upsetting-jaws in said carriers, each comprising a hollow semicylinder closed at one end and having beveled portions along their meeting-edges adapted to engage tie ribs of said carriers. 10. In a drill-making machine, a pair of semi -circular shaped dies, adapted when closed to grip the drill-steel, and a pair of cooperating upsetting-jaws in alinement with said dies, each comprising a hollow-cylinder closed at the end farthest from said dies, and means for striking said closed ends to reciprocate the upsetting-j aws against the drill-steel;

In testimony \vhereofI afiix my signature in presence of two witnesses;

' JQIIN GEORGE LEYNER. lVitnessesnf Gnoncn R. Gnmvn,

G. SARGENT ELLIOTT.

comprising hollow, elongated members havmachine, clie carriers mg inwai. .,y pro eeting die-retaining ribs 

